Read matrix domain

src/freedombone-app-matrix

     new_user_password="$2"
     is_admin_user='-a'
 
+    read_config_param MY_USERNAME
     if [[ "$new_username" != "$MY_USERNAME" ]]; then
         is_admin_user=''
     fi
     ${PROJECT_NAME}-pass -u $new_username -a matrix -p "$new_user_password"
 
     if [[ $ONION_ONLY == 'no' ]]; then
+        read_config_param MATRIX_DOMAIN_NAME
         retval=$(register_new_matrix_user -c ${MATRIX_DATA_DIR}/homeserver.yaml -u "${new_username}" -p "${new_user_password}" $is_admin_user https://${MATRIX_DOMAIN_NAME})
     else
         retval=$(register_new_matrix_user -c ${MATRIX_DATA_DIR}/homeserver.yaml -u "${new_username}" -p "${new_user_password}" $is_admin_user http://${MATRIX_DOMAIN_NAME})